<!--
Application level default channels. Application level default channels are
necessary when a dynamic destination is being used by a service component
and no ChannelSet has been defined for the service component. In that case,
application level default channels will be used to contact the destination.
-->
<default-channels>
<channel ref="my-amf"/>
</default-channels>

[MessagingError message='Destination 'usersService' either does not exist or the destination has no channels defined (and the application does not define any default channels.)']
Couldn't establish a connection to 'usersService'